Question

Derive expression of price of liquid in capillary tube of insufficient length.​

Answer 1

Answer:

ANSWER

Lets say capillary of radius r is placed in a beaker containing a liquid of density & and water rises in the capillary the height h,

PB−PC=R2T---------(1) &

PB=PO--------(3)

PA=Po--------(4)

PC+ρgh=PA------(2)

From (1),(2)&(3),(4) press are gradient

Po−R2T=Pρgh

R2T=ρgh⇒h=Rρg2T=ρgr2Tcosθ 

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